/*  Copyright (c) 2003 PureSilk.Org  */
/* ====================================================================
 * 
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 1999 The Apache Software Foundation.  All rights 
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer. 
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:  
 *       "This product includes software developed by the 
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written 
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */ 


/*
 * WebAction.java
 *
 * Created on April 17, 2003, 10:31 AM
 */

package org.puresilk.web;

import org.puresilk.web.actions.*;

import java.sql.*;
import javax.servlet.http.*;

/**
 *
 * @author  david
 */
public abstract class WebAction implements Action {
    
    private PSOServlet context = null;
    private Connection dbConn = null;
    
    /** Creates a new instance of WebAction */
    public WebAction() {
    }
    
    /** Action Interface requirements to omplement in decendants */
    public abstract String execute(HttpServletRequest req);
    
    /** Default response for extended execute */
    public abstract String execute(HttpServletRequest req, HttpServletResponse resp);
    
    /** Servlet context */
    public void setContext (PSOServlet pso) { context = pso; }
    public PSOServlet getContext () { return context; }
    
    /** Database Connection */
    public void setConnection ( Connection conn ) { dbConn = conn; }
    public Connection getConnection () { return dbConn; }
    
    
    // context logging support functions 
    /** Debug logging */
    protected void logDebugMsg ( String msg ) { 
        if (context != null)
            context.logDebugMsg(msg);
    }
    
    /** Info logging */
    protected void logInfoMsg ( String msg ) { 
        if (context != null)
            context.logInfoMsg(msg);
    }
    /** Warning logging */
    protected void logWarningMsg ( String msg ) { 
        if (context != null)
            context.logWarningMsg(msg);
    }

    /** Error logging */
    protected void logErrorMsg ( String msg ) { 
        if (context != null)
            context.logErrorMsg(msg);
    }
    
    /** Fatal Error logging */
    protected void logFatalMsg ( String msg ) { 
        if (context != null)
            context.logFatalMsg(msg);
    }

	// log error with exceptions info
	protected void log(String msg, Throwable ex){
	    if (context != null)
	    	context.log(msg,ex);
	}

	// pass through for servlet error log
	protected void log(String msg){
	    if (context != null)
	    	context.log(msg);
	}

}
